I would like to add more books, but not everyone is keen on reading them.
So, since most writers also present a lot of the material on conferences, I suggest to lookup:
- Kent Beck
- Robert C. Martin (Uncle Bob)
- Martin Fowler
- Allen Holub
- Neal Ford
They all give excellent talks and know their trade.
For books, I’d add Pragmatic Programmer and User Story Mapping as part of generic information on software engineering.